Multiple cross-site scripting (XSS) vulnerabilities in Drupal (1) Project Issue Tracking 4.7.x-1.0 and 4.7.x-2.0, and (2) Project 4.6.x-1.0, 4.7.x-1.0, and 4.7.x-2.0 allow remote attackers to inject arbitrary web script or HTML via unspecified parameters, which do not use the check_plain function.